Various keys on the keyboard not working

Im using a saitek eclipse 2 keyboard and recently ive noticed that the following keys are no longer functioning: f8, f9, f10, f11, f12 and the print screen key. all other keys work fine as you can probably tell. i have no idea why this is happening. there are no drivers to install even on the saitek website because its a plug and play keyboard. This is really frustrating because i use those keys quite often in games.
My specs are:
Core 2 duo e6400
2gb ddr2 667
8600gt
Tagan 530w psu